The quantum version obtains after turning on an \(\Omega \)  background à la Nekrasov-Shatashvili (NS) \((\varepsilon _1=\hbar , \varepsilon _2=0)\)  [1]}, [2]}, [3]}, [4]}, [5]}, [6]}, [7]}. As a result
\(y\rightarrow \hat{y} = y \quad , \quad x\rightarrow \hat{x} = \hbar y{d\over dy}\) 
